EP0084074B1 - Method of manufacturing pressed shaped articles of a non-expandable composition - Google Patents
Method of manufacturing pressed shaped articles of a non-expandable composition Download PDFInfo
- Publication number
- EP0084074B1 EP0084074B1 EP82100334A EP82100334A EP0084074B1 EP 0084074 B1 EP0084074 B1 EP 0084074B1 EP 82100334 A EP82100334 A EP 82100334A EP 82100334 A EP82100334 A EP 82100334A EP 0084074 B1 EP0084074 B1 EP 0084074B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moulding
- shaped
- container
- filled
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000203 mixture Substances 0.000 title description 7
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000000465 moulding Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000000630 rising effect Effects 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 4
- 239000000206 moulding compound Substances 0.000 claims abstract 10
- 230000003534 oscillatory effect Effects 0.000 claims abstract 2
- 238000003825 pressing Methods 0.000 description 23
- 150000001875 compounds Chemical class 0.000 description 13
- 239000002245 particle Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 241000609240 Ambelania acida Species 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N5/00—Manufacture of non-flat articles
Definitions
- the invention relates to a process for producing a nonwoven from a pourable, but not or only poorly climbable, chip or fibrous molding compound mixed with a binder in a press mold for the subsequent pressing of a profile body using a box-shaped, with the molding compound which can be placed on a press tool lower part filled container with sieve-shaped bottom, from which the molding compound reaches the lower part of the pressing tool by means of an oscillating movement of the sieve bottom.
- Such a method is known (DE-C-2618599 and DE-A-2621 717). It is used extensively for the production of such nonwovens, from which profile bodies such as table tops, window sills, pallets and the like. Like. Be pressed.
- the non-rising mixture is filled into a lower part of the press tool either in a layer thickness that is as uniformly thick as possible or deliberately different at certain points.
- the layer thickness of the mixture in the lower part of the pressing tool is usually three to seven times the finished profile body.
- the mixture filled into the lower part of the press tool is pre-pressed by moving in a press ram and almost compressed to its final dimensions.
- the strength of the preform produced in this way is sufficient to prevent deformation or breakage when it is removed from the pressing tool, which has served as a pre-pressing tool in the two-stage pressing process.
- the pre-compact is then, optionally with simultaneous covering with a decorative film, inserted into a further pressing tool, a hot pressing tool, by means of which the pre-compact obtains its final shape during the subsequent pressing under the action of pressure and heat, thereby curing and possibly simultaneously with the decorative layer is enveloped.
- the non-rising mixture usually consists of lignocellulosic fibrous materials, such as shredded and dried wood shavings, bagasse fibers and the like. ⁇ ., Which are mixed with a thermosetting synthetic resin, such as a malamine-urea-formaldehyde or phenol-formaldehyde resin.
- a thermosetting synthetic resin such as a malamine-urea-formaldehyde or phenol-formaldehyde resin.
- fibers of other materials such as glass fibers, rock wool or asbestos fibers, alone or several of them mixed with one another, to which corresponding, preferably organic, binders have been added can also be used.
- the lower part of the pressing tool is filled in such a way that the container filled with the non-rising mixture is placed on the lower part of the pressing tool. If the sieve-shaped bottom, for example by a vibrating drive, is set in oscillating motion, then the non-rising mixture in the container trickles gradually into the free space of the pressing tool lower part, the upper opening of which is delimited by the sieve-shaped bottom, until a complete one Filling of the press tool lower part is achieved. If the vibrating drive is not immediately switched off after the filling of the pressing tool lower part has been completed, then only fine molding compound particles can get into the pressing tool lower part if the sieve bottom is designed accordingly and the movement carried out by it.
- the object underlying the invention is therefore to further develop the known method according to the preamble of claim 1 in such a way that the consequences of the inhomogeneous distribution of the resin content in the profile body are avoided or compensated.
- This object is achieved in that the volume of the pressing tool lower part is reduced in such a way that there is a very small distance between the bottom of the pressing tool lower part and the sieve bottom, then the container filled with molding compound is placed hard on the pressing tool lower part and only then the volume of the pressing tool lower part enlarged to the required extent and the molding compound is filled into this volume in a manner known per se.
- This procedure creates a thin layer of fine molding compound particles on the bottom of the bottom part of the pressing tool.
- a thin layer of fine molding compound particles is formed not only on the upper surface of the nonwoven, but also on the lower surface or, depending on the shape of the nonwoven, possibly even on the entire surface of the nonwoven.
- the volume with the higher proportion of resin is thus uniformly distributed on the surface of the profile body, so that the stresses which arise as a result cannot act as a mechanical deformation of the profile body.
- the device shown in FIG. 1 consists of the box-shaped container 1 which fits onto the pressing tool lower part 2 and to the lower end of which the sieve-shaped base 3, which is provided with a plurality of openings, is fastened.
- a resilient suspension of the container 1 is realized in the device shown in that the container 1 is attached to the frame 5 by means of the rubber damper 4, in which metallic fastening aids are embedded.
- the vibrating drive 7 is fastened, which should preferably move the container 1 suddenly in a horizontal plane, wherein the vibrating movement itself can have a circular, elliptical or other shape.
- the pressing tool lower part 2 consists of the side part 8 and the bottom 9, which is formed in one piece in the exemplary embodiment shown.
- the side part 8 and bottom 9 can be moved relative to one another, the bottom 9 being arranged, for example, in a fixed manner, while the side part 8 is vertically displaceable by a certain distance.
- Fig. 1 the starting position of the side part 8 and bottom 9 is shown, i. H. the side part 8 has been moved into its lowermost position, so that there is only a small distance between the sieve-shaped base 3 and the surface of the base 9.
- the side part 8 is moved into the high position which corresponds to the desired filling volume in the lower press part 2.
- the space between the bottom 9 and the sieve-shaped bottom 3 is then filled in a manner known per se, a fleece being produced in which both the lower outer surface and the upper outer surface consist of a thin layer of fine molding compound particles.
- the profile body pressed from such a fleece shows no tendency to unevenness.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Confectionery (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Vlieses aus einer schüttfähigen, jedoch nicht oder nur schlecht steigfähigen span-oder faserförmigen, mit einem Bindemittel versetzten Preßmasse in einer Preßform für das nachfolgende Pressen eines Profilkörpers unter Verwendung eines auf ein Preßwerkzeugunterteil aufsetzbaren kastenförmigen, mit der Preßmasse gefüllten Behälter mit siebförmigen Boden, aus dem die Preßmasse durch eine schwingende Bewegung des Siebbodens in das Preßwerkzeugunterteil gelangt.The invention relates to a process for producing a nonwoven from a pourable, but not or only poorly climbable, chip or fibrous molding compound mixed with a binder in a press mold for the subsequent pressing of a profile body using a box-shaped, with the molding compound which can be placed on a press tool lower part filled container with sieve-shaped bottom, from which the molding compound reaches the lower part of the pressing tool by means of an oscillating movement of the sieve bottom.
Ein solches Verfahren ist bekannt (DE-C-2618599 bzw. DE-A-2621 717). Es wird in großem Umfang für die Herstellung solcher Vliese verwendet, aus denen Profilkörper, wie Tischplatten, Fensterbänke, Paletten u. dgl. gepreßt werden. Dabei wird das nicht steigfähige Gemisch je nach Form und Eigenschaften des fertigen Profilkörpers entweder in einer möglichst gleichmäßig starken oder an bestimmten Stellen bewußt unterschiedlichen Schichtdicke in ein Preßwerkzeugunterteil eingefüllt. Die Schichtdicke des Gemisches in dem Preßwerkzeugunterteil beträgt dabei üblicherweise das Dreibis Siebenfache des fertigen Profilkörpers. Das in das Preßwerkzeugunterteil eingefüllte Gemisch wird durch Einfahren eines Preßstempels vorgepreßt und dabei nahezu auf sein Endmaß verdichtet. Die Festigkeit des derart hergestellten Vorpreßlings reicht aus, um ein Verformen oder Zerbrechen beim Herausnehmen aus dem Preßwerkzeug, welches beim zweistufigen Preßvorgang als Vorpreßwerkzeug gedient hat, zu verhindern. Der Vorpreßling wird dann, ggf. unter gleichzeitiger Bedeckung mit einer Dekorfolie, in ein weiteres Preßwerkzeug, ein Heißpreßwerkzeug eingesetzt, durch welches der Vorpreßling beim nachfolgenden Pressen unter Einwirkung von Druck und Wärme seine endgültige Form erhält, dabei aushärtet und ggf. gleichzeitig mit der Dekorschicht umhüllt wird.Such a method is known (DE-C-2618599 and DE-A-2621 717). It is used extensively for the production of such nonwovens, from which profile bodies such as table tops, window sills, pallets and the like. Like. Be pressed. Depending on the shape and properties of the finished profile body, the non-rising mixture is filled into a lower part of the press tool either in a layer thickness that is as uniformly thick as possible or deliberately different at certain points. The layer thickness of the mixture in the lower part of the pressing tool is usually three to seven times the finished profile body. The mixture filled into the lower part of the press tool is pre-pressed by moving in a press ram and almost compressed to its final dimensions. The strength of the preform produced in this way is sufficient to prevent deformation or breakage when it is removed from the pressing tool, which has served as a pre-pressing tool in the two-stage pressing process. The pre-compact is then, optionally with simultaneous covering with a decorative film, inserted into a further pressing tool, a hot pressing tool, by means of which the pre-compact obtains its final shape during the subsequent pressing under the action of pressure and heat, thereby curing and possibly simultaneously with the decorative layer is enveloped.
Das nicht steigfähige Gemisch besteht meist aus lignozellulosehaltigen Faserstoffen, wie zerkleinerten und getrockneten Holzspänen, Bagassefasern u. ä., die mit einem wärmehärtbaren Kunstharz, wie einem Malamin-Harnstofformaldehyd- oder Phenolformaldehydharz vermischt sind. Anstelle der zerkleinerten und getrockneten Holz- oder Bagassefasern können aber auch Fasern anderer Werkstoffe, wie Glasfasern, Steinwolle oder Asbestfasern, allein oder mehrere derselben miteinander vermischt, verwendet werden, denen entsprechende, vorzugsweise organische, Bindemittel zugesetzt sind.The non-rising mixture usually consists of lignocellulosic fibrous materials, such as shredded and dried wood shavings, bagasse fibers and the like. Ä., Which are mixed with a thermosetting synthetic resin, such as a malamine-urea-formaldehyde or phenol-formaldehyde resin. Instead of the shredded and dried wood or bagasse fibers, fibers of other materials, such as glass fibers, rock wool or asbestos fibers, alone or several of them mixed with one another, to which corresponding, preferably organic, binders have been added can also be used.
Das Füllen des Preßwerkzeugunterteils geht in der Weise vonstatten, daß der mit dem nicht steigfähigen Gemisch gefüllte Behälter auf das Preßwerkzeugunterteil aufgesetzt wird. Wird der siebförmige Boden, beispielsweise durch einen Rüttelantrieb, in schwingende Bewegung versetzt, dann rieselt das im Behälter befindliche, nicht steigfähige Gemisch nach und nach so lange in den freien Raum des Preßwerkzeugunterteils, dessen obere Öffnung von dem siebförmigen Boden begrenzt ist, bis eine vollständige Füllung des Preßwerkzeugunterteils erzielt ist. Wenn der Rüttelantrieb nach vollendeter Füllung des Preßwerkzeugunterteils nicht sogleich abgestellt wird, dann können bei entsprechender Ausgestaltung des Siebbodens und der von diesem ausgeführten Bewegung nur noch feine Preßmassenteilchen in das Preßwerkzeugunterteil gelangen.The lower part of the pressing tool is filled in such a way that the container filled with the non-rising mixture is placed on the lower part of the pressing tool. If the sieve-shaped bottom, for example by a vibrating drive, is set in oscillating motion, then the non-rising mixture in the container trickles gradually into the free space of the pressing tool lower part, the upper opening of which is delimited by the sieve-shaped bottom, until a complete one Filling of the press tool lower part is achieved. If the vibrating drive is not immediately switched off after the filling of the pressing tool lower part has been completed, then only fine molding compound particles can get into the pressing tool lower part if the sieve bottom is designed accordingly and the movement carried out by it.
Obwohl ein solches Vlies die Eigenschaft besitzt, daß seine Oberfläche kein dem Siebboden entsprechendes Muster aufweist und beim nachfolgenden Pressen ein Preßkörper mit einer besonders glatten Oberfläche entsteht, kann es dennoch vorkommen, daß bei bestimmten Preßkörpen infolge innerer Spannungen unerwünschte Durchbiegungen entstehen. Neben der erwünschten guten Eigenschaft der feinen Preßmasseteilchen auf einer Oberfläche des Vlieses, führer diese aber auch zu einer inhomogenen Verteilung des Harzanteils im fertigen Preßkörper, weil die feinen Preßmasseteilchen einen höheren Harzanteil als die übrige Preßmasse besitzen. Im fertig gepreßten und ausgehärteten Profilkörper kann die inhomogene Verteilung des Harzanteils zu inneren Spannungen im Profilkörper führen.Although such a fleece has the property that its surface does not have a pattern corresponding to the sieve bottom and that a pressing body with a particularly smooth surface is formed in the subsequent pressing, it can nevertheless occur that undesirable deflections occur in certain pressing bodies as a result of internal stresses. In addition to the desired good property of the fine molding compound particles on a surface of the nonwoven, this also leads to an inhomogeneous distribution of the resin component in the finished compact, because the fine molding compound particles have a higher resin component than the remaining molding compound. In the pressed and hardened profile body, the inhomogeneous distribution of the resin content can lead to internal stresses in the profile body.
Die der Erfindung zugrunde liegende Aufgabe besteht deshalb darin, das bekannte Verfahren gemäß Oberbegriff des Patentanspruchs 1 in der Weise weiter zu entwickeln, daß die Folgen der inhomogenen Verteilung des Harzanteils im Profilkörper vermieden bzw. kompensiert werden.The object underlying the invention is therefore to further develop the known method according to the preamble of claim 1 in such a way that the consequences of the inhomogeneous distribution of the resin content in the profile body are avoided or compensated.
Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß zunächst das Volumen des Preßwerkzeugunterteils derart verkleinert wird, daß zwischen dem Boden des Preßwerkzeugunterteils und dem Siebboden ein sehr geringer Abstand verbleibt, anschließend der mit Preßmasse gefüllte Behälter hart auf das Preßwerkzeugunterteil aufgesetzt und erst danach das Volumen des Preßwerkzeugunterteils auf das erforderliche Maß vergrößert und in dieses Volumen die Preßmasse in an sich bekannter Weise eingefüllt wird.This object is achieved in that the volume of the pressing tool lower part is reduced in such a way that there is a very small distance between the bottom of the pressing tool lower part and the sieve bottom, then the container filled with molding compound is placed hard on the pressing tool lower part and only then the volume of the pressing tool lower part enlarged to the required extent and the molding compound is filled into this volume in a manner known per se.
Durch diese Verfahrensweise wird zu Beginn des Füllens des Preßwerkzeugunterteils auf dessen Boden eine dünne Schicht aus feinen Preßmasseteilchen erzeugt. Auf diese Weise entsteht nicht nur auf der oberen Oberfläche des Vlieses eine dünne Schicht aus feinen Preßmasseteilchen, sondern auch auf der unteren Oberfläche bzw. je nach der Gestalt des Vlieses ggf. sogar auf der gesamten Oberfläche des Vlieses. Bei dem aus diesem Vlies gepreßten Profilkörper ist somit das Volumen mit dem höheren Harzanteil gleichmäßig auf der Oberfläche des Profilkörpers verteilt, so daß sich dadurch entstehende Spannungen nicht als eine mechanische Verformung des Profilkörpers auswirken können.This procedure creates a thin layer of fine molding compound particles on the bottom of the bottom part of the pressing tool. In this way, a thin layer of fine molding compound particles is formed not only on the upper surface of the nonwoven, but also on the lower surface or, depending on the shape of the nonwoven, possibly even on the entire surface of the nonwoven. In the case of the profile body pressed from this fleece, the volume with the higher proportion of resin is thus uniformly distributed on the surface of the profile body, so that the stresses which arise as a result cannot act as a mechanical deformation of the profile body.
Die Erfindung ist nachstehend anhand der Figuren 1 und 2 erläutert. Es zeigen :
- Figur 1 die Vorrichtung zur Herstellung des Vlieses zu Beginn des Füllens des Preßwerkzeugunterteils und
Figur 2 die Vorrichtung gemäß Fig. 1 am Ende des Füllvorganges.
- Figure 1 shows the device for producing the fleece at the beginning of filling the press tool lower part and
- Figure 2 shows the device of FIG. 1 at the end of the filling process.
Die aus Fig. 1 ersichtliche Vorrichtung besteht aus dem auf das Preßwerkzeugunterteil 2 passenden kastenförmigen Behälter 1, an dessen unterem Ende der mit einer Vielzahl von Öffnungen versehene siebförmige Boden 3 befestigt ist. Eine nachgiebige Aufhängung des Behälters 1 ist bei der gezeigten Vorrichtung dadurch verwirklicht, daß der Behälter 1 mittels der Gummidämpfer 4, in welche metallische Befestigungshilfen eingebettet sind, an dem Rahmen 5 befestigt ist. An dem, das obere Ende des Behälters 1 überspannenden Steg 6 ist der Rüttelantrieb 7 befestigt, der den Behälter 1 vorzugsweise in horizontaler Ebene ruckartig bewegen soll, wobei die Rüttelbewegung selbst eine kreisförmige, elliptische oder andere Form besitzen kann.The device shown in FIG. 1 consists of the box-shaped container 1 which fits onto the pressing tool
Das Preßwerkzeugunterteil 2 besteht aus dem Seitenteil 8 und dem in dem gezeigten Ausführungsbeispiel einstückig ausgebildeten Boden 9. Seitenteil 8 und Boden 9 sind relativ zueinander bewegbar, wobei der Boden 9 beispielsweise feststehend angeordnet ist, während das Seitenteil 8 um eine bestimmte Strecke vertikal verschiebbar ist.The pressing tool
In Fig. 1 ist die Ausgangsstellung von Seitenteil 8 und Boden 9 gezeigt, d. h. das Seitenteil 8 ist in seine unterste Stellung verschoben worden, so daß zwischen dem siebförmigen Boden 3 und der Oberfläche des Bodens 9 nur ein geringer Abstand verbleibt.In Fig. 1 the starting position of the
Wird nun der Behälter 1 in die gezeichnete Stellung gebracht, dabei hart aufgesetzt oder gleichzeitig der Rüttelantrieb in Gang gesetzt, dann fällt nur eine bestimmte Menge feiner Preßmasseteilchen durch den siebförmigen Boden und bildet auf dem Boden 9 eine dünne Schicht.If the container 1 is now brought into the position shown, placed hard on it or at the same time the vibratory drive is started, then only a certain amount of fine molding compound particles falls through the sieve-shaped base and forms a thin layer on the
Danach wird, wie in Fig. 2 gezeigt, das Seitenteil 8 in die Höhenlage verfahren, welche dem gewünschten Füllvolumen im Preßwerkzeugunterteil 2 entspricht. Der Raum zwischen Boden 9 und siebförmigem Boden 3 wird dann in an sich bekannter Weise gefüllt, wobei ein Vlies erzeugt wird, bei dem sowohl die untere Außenfläche als auch die obere Außenfläche aus einer dünnen Schicht feiner Preßmasseteilchen besteht. Der aus einem solchen Vlies gepreßte Profilkörper zeigt keine Neigung zu Unebenheiten.Thereafter, as shown in FIG. 2, the
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP82100334A EP0084074B1 (en) | 1982-01-19 | 1982-01-19 | Method of manufacturing pressed shaped articles of a non-expandable composition |
| DE8282100334T DE3268198D1 (en) | 1982-01-19 | 1982-01-19 | Method of manufacturing pressed shaped articles of a non-expandable composition |
| AT82100334T ATE17204T1 (en) | 1982-01-19 | 1982-01-19 | PROCESS FOR THE MANUFACTURE OF PRESSED PROFILE ELEMENTS FROM A NON-Climbable MIXTURE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP82100334A EP0084074B1 (en) | 1982-01-19 | 1982-01-19 | Method of manufacturing pressed shaped articles of a non-expandable composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0084074A1 EP0084074A1 (en) | 1983-07-27 |
| EP0084074B1 true EP0084074B1 (en) | 1986-01-02 |
Family
ID=8188828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82100334A Expired EP0084074B1 (en) | 1982-01-19 | 1982-01-19 | Method of manufacturing pressed shaped articles of a non-expandable composition |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0084074B1 (en) |
| AT (1) | ATE17204T1 (en) |
| DE (1) | DE3268198D1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9008655D0 (en) * | 1990-04-18 | 1990-06-13 | Caledonia Composites | Vertical pultruder |
| EP0970788A1 (en) * | 1998-07-10 | 2000-01-12 | Werzalit Ag + Co. | Apparatus and method for producing a mat from a fibrous moulding material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689597A (en) * | 1951-02-15 | 1954-09-21 | Bartrev Ltd | Apparatus and process for forming mats of comminuted material |
| DE942478C (en) * | 1953-06-25 | 1956-05-03 | Formholz G M B H | Process for the production of machinable synthetic wood moldings or panels from fine wood flour |
| DE1929465A1 (en) * | 1969-06-10 | 1970-12-23 | Andre Mark | Device for the production of wood fiber boards |
| DE2618599C3 (en) * | 1976-04-28 | 1979-08-09 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Device for the metered filling of stationary molds |
| DE2709467C3 (en) * | 1977-03-04 | 1980-02-14 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Method and device for producing a mat from non-flowable molding compound for molded bodies |
-
1982
- 1982-01-19 DE DE8282100334T patent/DE3268198D1/en not_active Expired
- 1982-01-19 EP EP82100334A patent/EP0084074B1/en not_active Expired
- 1982-01-19 AT AT82100334T patent/ATE17204T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE17204T1 (en) | 1986-01-15 |
| DE3268198D1 (en) | 1986-02-13 |
| EP0084074A1 (en) | 1983-07-27 |
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